Smelting furnace



A. JONES May 14, 1929.

SMELTING FURNACE Filed Oct. 29, 1925 3 Sheets-Sheet l INVENTOR ATTORNE Y May 14, 1929. A. JONES 1,112,169

SMELTING FURNACE Filed Oct. 29,1925 ssmn-sma 2 h 0 O Q O c i O -1 0 i 0 O o O 40 z\' 90 f I40 2 6/ ,f 2 h 23 o 0 L: 3 O o 3 2'0 INVENTOR' May 14, '1929. A, JONES 1,712,769

SMELTI N6 FURNAC E I Filed oct. 29, 1925 3 Sheets-Sheet 3 Fig.3.

INVENTOR 30 AJONES BY KW ATTDRNEY Patented May 14, 1929.

UNITEDST'ATES PATENT} OFFICE.

ARTHUR JONES, on BELLEVILLE, ILLINOIS, ASSIGNOR TO U. s. sMnLTINe FURNACE COMPANY, or BELLEVILLE-ILLINOIS, A coaronarron or ILLINOIS.

smnrrme FURNACE.

Application filed October 29, 1925. SeriaI NO. 65,543.

My invention relates to a furnace and particularly to that type of furnace which rotates on a horizontalaxis during the opera tion of smelting and which may be tilted to discharge the molten metal. A furnace of this type is shown in Patent No. 1,334,459 granted to me March 23, 1920, the construc tion of which is Well adapted to small furnaces. I have found, however, that such construction is not entirely satisfactory in larger sizes of furnaces owing to the difficulty of manipulating the furnace. This difficulty arises from the considerable change in height of the pouring lip in discharging thefurnace and from the weight of the furnace which necessitates power operated mechanism for its control.

One object of my inventionis to overcome the above difficulties. Another object of my invention is to provide compensating means for the expansion and contraction of the furnace shell, which is considerable in large fur naces. My invention further consists in various details of construction which will be described hereinafter.

In the accompanying drawings, which illustrate one form of furnace made in accordance with my invention, Figure 1 is a side elevation; Figure 2 is an end view; Figure 3 is a horizontal section taken looking downwardly on the line 3-3 of Figure 1; and Figure 4 is a sectional view of the fuel supply ljhe shell of the furnace consists of a central cylindrical part 5 and conical end pieces 6 and 7 and is provided with a lining 8 of fire brick or other refractory material. A charging door 9 is pivotally mounted on the part 6 of the shell and is preferably operated by a hand wheel 10 through worm gearlng 12. In order to allow for the expansion and contraction of the shell the conical parts 6 and 7 are yieldingly secured to the central part 5 by the construction shown in Figure 3. Lugs 12 are provided on the ends 6 and 7 through which pass bolts 13 which also pass through end tracks 14 clamped on the shell Coil springs 15 are interposed between the tracks 14 and nuts 16 on the end of the bolts.- This allows of the necessary relative movements of parts 5, 6 and 7 to compensate for the difference in expansion and contraction between the shell and the lining under the very great changes of temperature to which they are subjected. In addition to the end track 14113118 cylinder 5 is preferably provided with a central track 17. The furnace proper is mounted to rotate freely in a cage 18 having central anti-friction rolls 19 sup porting the track 17 and end rolls 20 supportlng the track 1 1. Flanges are formed on the end rolls 20 to prevent longitudinal movement of the furnace in the cage when the device is tilted.

A frame work 21 surrounds the furnace and projects a considerable distance above the same. This frame work is provided with bearings 22 and 23 to receive trunnions on the cage 18 which trunnions is approximately in line with the pouring lip of the furnace and consequently the tilting axis of the furnace approximately coincides with the pouring point which is thus not appreciably raised or lowered during the tilting of the furnace. The furnace is rotated in the cage 18 by means of gear wheels 24 mounted on a shaft 25 and meshing with annular gears 26 carried by the end tracks 14. A motor 27 drives the shaft 25 through gearing 28 situated in the bearing 22 so that the furnace may be rotated not only when the cage is stationary but also when it is being tilted. 29 is the fuel supply which passes through the trunnion 23 and terminates in a burner 30 adj acent to the door 9 and discharges the flame into the furnace through an opening 31 in said door. This construction prevents the tilting of the furnace from interfering with the fuel supply. Intermediate of its length the supply pipe is provided with a swivel joint 32 (Figure 4) so that it may be rotated 011 its axis to align the burner 30 with the opening 31 or to swing it out of alignment when the furnace is charged. Such rotation is accomplished by means of a worm wheel 33 on the pipe engaging with a worm 3 1 which may be actuated either by hand or power.

Mounted on top of the frame 21 is a motor 35 which through clutch mechanism 36 and gearing 37 drives a pair of drums 38. Wound on the drums 38 are cables 39 the lower ends of which are attached to the furnace at 10. Ladders 41 may, if desired, be provided to give access to the mechanism at the top of the frame. While the bearings 22 and 23 may be formed directly in the frame 21 I prefer to form them in separate pedes- I tals 42 which, however, being fixed with re- Patentof the United States is:

.In a device of the class described, the combination with a tilting and rotating furnace, of a fuel supply pipe for said furnace extending in the direction of the length of the furnace, a lateral extension carried by said supply pipe, a burner carried on said lateral extension, and means for rotating said pipe on its axis to throw said burner into and out of alignment with the furnace.

In testimony whereof, I hereunto aflix my signature, this 27th day of October, 1925.

ARTHUR JONES. 

